首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1388598篇
  免费   104534篇
  国内免费   7438篇
耳鼻咽喉   17322篇
儿科学   44095篇
妇产科学   36980篇
基础医学   204546篇
口腔科学   36944篇
临床医学   136148篇
内科学   266219篇
皮肤病学   27075篇
神经病学   114672篇
特种医学   50576篇
外国民族医学   403篇
外科学   189878篇
综合类   36377篇
现状与发展   8篇
一般理论   462篇
预防医学   117688篇
眼科学   30482篇
药学   104193篇
  50篇
中国医学   5813篇
肿瘤学   80639篇
  2021年   13728篇
  2019年   13385篇
  2018年   18197篇
  2017年   13896篇
  2016年   14956篇
  2015年   17689篇
  2014年   23922篇
  2013年   34826篇
  2012年   48659篇
  2011年   51425篇
  2010年   29991篇
  2009年   27293篇
  2008年   45751篇
  2007年   47954篇
  2006年   47878篇
  2005年   46064篇
  2004年   43328篇
  2003年   41131篇
  2002年   39730篇
  2001年   61927篇
  2000年   63616篇
  1999年   53346篇
  1998年   15191篇
  1997年   13936篇
  1996年   13640篇
  1995年   12897篇
  1994年   11983篇
  1993年   11172篇
  1992年   41862篇
  1991年   40984篇
  1990年   39636篇
  1989年   37498篇
  1988年   34710篇
  1987年   33802篇
  1986年   32230篇
  1985年   30709篇
  1984年   23078篇
  1983年   19632篇
  1982年   11771篇
  1979年   20825篇
  1978年   14825篇
  1977年   12067篇
  1976年   11880篇
  1975年   12113篇
  1974年   14807篇
  1973年   14482篇
  1972年   13359篇
  1971年   12425篇
  1970年   11492篇
  1969年   10418篇
排序方式: 共有10000条查询结果,搜索用时 22 毫秒
31.
32.
The value of adding simeprevir (SMV) vs placebo (PBO) to peginterferon and ribavirin (PR) for treatment of chronic hepatitis C virus infection was examined using patient‐reported outcomes (PROs); further, concordance of PROs with virology endpoints and adverse events (AEs) was explored. Patients (= 768 SMV/PR,= 393 PBO/PR) rated fatigue (FSS), depressive symptoms (CES‐D) and functional impairment (WPAI: Hepatitis C Productivity, Daily Activity and Absenteeism) at baseline and throughout treatment in three randomised, double‐blind trials comparing the addition of SMV or PBO during initial 12 weeks of PR. PR was administered for 48 weeks (PBO group) and 24/48 weeks (SMV group) using a response‐guided therapy (RGT) approach. Mean PRO scores (except Absenteeism) worsened from baseline to Week 4 to the same extent in both groups but reverted after Week 24 for SMV/PR and only after Week 48 for PBO/PR. Accordingly, there was a significantly lower area under the curve (baseline–Week 60, AUC60) and fewer weeks with clinically important worsening of scores in the SMV/PR group at any time point. Incidences of patients with fatigue and anaemia AEs were similar in both groups, but FSS scores showed that clinically important increases in fatigue lasted a mean of 6.9 weeks longer with PBO/PR (P < 0.001). PRO score subgroup analysis indicated better outcomes for patients who met the criteria for RGT or achieved sustained virological response 12 weeks post‐treatment (SVR12); differences in mean PRO scores associated with fibrosis level were only observed with PBO/PR. Greater efficacy of SMV/PR enabled reduced treatment duration and reduced time with PR‐related AEs without adding to AE severity.  相似文献   
33.
European Journal of Orthopaedic Surgery & Traumatology - The goals of this study were to compare patient satisfaction and wound-related complications in patients receiving 2-octyl cyanoacrylate...  相似文献   
34.
35.
36.
Annals of Nuclear Medicine - The Response Evaluation Criteria In Solid Tumors (RECIST) is the most used radiological method for evaluating response after peptide receptor radionuclide therapy...  相似文献   
37.
38.
Bowel diseases of prematurity, including necrotizing enterocolitis, are dreaded ailments of neonates. Early diagnosis is difficult, with clinical and radiographic findings often inconclusive. We present a novel use of contrast-enhanced ultrasound in detection of pediatric bowel disease. Early identification of compromised blood flow or an at-risk bowel can be quantitatively detected and monitored. This ability has implications for guidance of emerging therapies, allowing targeting of inflammation. These findings represent an advancement in detection of bowel disease in neonates.  相似文献   
39.
40.
In 1963, Goffman argued that forming a group based on shared stigma may provide benefits. However, there is no empirical research on whether perception that a separate, unique, coherent group exists (i.e., group entitativity) influences coping, such as educating others or secrecy, for the stigmatized individual or his or her spouse. Further, little is known about how spouses influence each other in terms of promoting the education of others about a stigmatizing condition, especially when it comes to the role of believing that stigma-based groups, to which they may both belong, exist. This study provides a step toward bridging this gap in the research by applying the label management model in efforts to understand coping for couples in which one spouse is diagnosed with genetic mutations leading to alpha-1 antitrypsin deficiency (AATD). This study included 50 married couples in which one spouse is diagnosed with genetic mutations leading to alpha-1 antitrypsin deficiency (AATD). We found that group entitativity related to those with AATD counterbalanced the influence of genetic stigma on spouses’ intentions to keep the diagnosis secret or to educate others about it. Intrapersonal and interpersonal influences appeared among spouses. Attention is needed on the power of creating groups for stigmatized persons and their relatives. Indeed, people live within a dynamic world of group entities, and multiple social identities including spousal and familial. While attention has been paid to the diffusion of stigmas to loved ones, less has been paid to the uplift of group entities for them.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号